Clean-out plug



C. E. GATE.

A CLEAN-OUT PLUG. APPucATaoN man Mmm, me.

1,304,174. V Patented May 20,1919.

2 SHEETS-SHEET 1.

kwanom Choa Gde,

C. E. GATE.

cLEAN-ou PLUG. APPLlCATlON FILED MAR. 23. ISIS.

A 1,304,174. I Patented May 20, 1919.

ZVSHEETS-SHEET 2.

Invsn'ron.

@ma E Gaa cHAEDEs EDWARD GATE, or WINNIPEG, MANITOBA, CANADA CLEAN-OUT PLUG.

Specification of Letters Patent.

Patented' May 20, 1919.

Application led March 23, 1918. Serial N o. 224,258.

T0 all whom it may concern L' Be it known that I, CHARLES EDWARD GATE, of the city of Winnipeg, in the Province of Manitoba, Canada, have invented certain new and useful Improvements in Clean- Out Plugs, of which the following is the specification.

The invention relates to vimprovements in -cleanout plugs especially as utilized with sewer pipes and the principal object of the invention is to provide a plug which will eectively close the pipe in which it is inserted and which can be easily removed when one desires to clean the sewer pipe.

A further object of the invention is to construct the plug so that the sewer gases and moisture in the pipe can in no way harm the working parts of the plug.

With the above more important and other minor objects in view the invention consists essentially in the arrangement and construction ofparts hereinafter more particularly described and later pointed out in the appended claims, reference being had to the accompanying drawings in which Figure l represents a fragmentary portion of the sewer pipe showing my invention installed.

Fig. 2 represents an enlarged detailed vertilcal sectional view through the cleanout p ug.

Fig. 3 represents a horizontalv sectional view through the cleanout plug and looking upwardly, the section being taken in the plane denoted by the line X--X Fig. 1.

Fig. 4. represents a sectional view through the plug at X-X and looking downwardly.

Fig. 5 represents la fragmentary portion of the upper end of the ring or collar.

Fig. 6 represents a vertical sectional view through a modiied form of plug.

Fig. 7 represents the modified form of plug as utilized on a trap.

\Fig. 8 represents an inverted plan view of the modied form of plug with the cap or cover removed.

In the drawings like characters of reference indicate corresponding parts in theseveral gures.

1 represents a main sewer pipe which is provided with a branching sewer cleanout pipe 2, a trap 8 and trap cleanout plug 4, this latter plug being of the .ordinary screw type and being provided to allow of entrance to the trap. `The branch or sewer cleanout pipe 2 isiormed with the usual flaring head 5 and shoulder or seat 5 and is closed with my plug as now described in detail.

' 6 represents an upwardly tapering ring or collar having the lower end formed with an inturned flange forming a valve seat 7 and the upper end provided with four out-turned lips or lugs 8 for a purpose later disclosed.

This collar is inserted withinthe` upper end of the cleanout pipe with the lower end bearing on the shoulder and isheld in fixed positions within the pipe in any suitable manner such as by locking as indicated at 9.

10 represents a cover or cap for the upper end of the collar which cap is provided with a downturned rim 11 fitted with an inwardly turned flange 12 which is recessed or slotted irl-four places as indicated at 13 to allow of the lugs 8 to pass through and take a position above the flange 12 when the cover is applied.

Fromk this arrangement it will be obvious that if one has applied the cover as above disclosed he can lock it against release by turning it until the lug passes away from the slots.

Centrally andl onthe underside the cover is provided with a bridge piece or bracket 14 presenting a horizontal bearingl through which I pass a vertically disposed valve stem 16 having the opposite ends threaded and supplied with nuts 17 and 18.

The nlower end of the steml carries the valve .19 which is constructed' from a lower metallic disk 2O and an upper metallic disk 21 between which I have placed a rubber disk 22. The underdisk is somewhat smaller than the other disks so that the top metallic disk and the rubber disk overhang the bottom disk whereby when the valve is seated the under face ofthe'rubber disk bears on the valve seat and the under disk is received within the fiange forming the valve seat.

In assembling the valve I ywish the top disk to be screwed into position on to the lower end of the valve stem and the rubber disk and under disk to be slipped into position on the stem so that when the nut 18 is tightened up the under disk will jam the 24 represents a handle for the cover comprising a rod having the ends thereof bent at right angles to the body and passed through suitable holes 25 provided in the cover and the extremities of the rod turned outwardly at 26 to form stops. Normally the weight of the handle holds it in the position shown, that is against the cover.

When it is to be used it is pulled out until the stops engage the underside of the cover.

From the above disclosure it will be apparent that the ring or collar is a permanent iXture in the pipe and that the cover with the valve are removable.

Vhen one wishes to close the pipe with my plug he simply inserts the valve until it seats on the valve seat and then forces the cap down against the action of the spring until the lugs 8 have vbeen passed through the slots 13, after which the cover is turned and becomes locked.

Obviously when the operation is complete the spring is under compression and serves to hold the valve eiliectively closed. Once installed it will be seen that neither the sewer gases nor the moisture in the sewer pipe can effect the working parts of the plug as they are closed off entirely by the valve.

The removing of the plug is a simple operation as one has simply to turn the cap untiljthe lugs reach the slots at which time the spring operates to release the cap. Then by pulling the handle outwardly one can lift the whole device clear of the pipe.

In Figs. G, 7 and 8 of the drawings I have shown this plug as modified slightly so that it can be utilized as a plug for a trap such as a wash basin trap.

In the modified form the collar, cap and valve are the same construction as hereinbefore disclosed with the eXception that one end of the valve stem is projected slidably through the cap. Then, instead of supplying a spiral spring, I provide a pair of crossed more or less V-shaped springs 27 and 28 which are mounted on the valve stem above the cap and have their outstanding ends terminating in foot pieces 29 bearing on the then underside of the valve, the springs being designed to be normally under compression and holding the valve closed.

The collar in this instance is soldered or otherwise secured to the trap 30 communicating with the bowl 31.

What I claim as my invention is 1. The combination with a pipe, of a cleanout plug comprising a collar inserted within the end of the pipe and provided at the inner end with a valve seat, a cap detachably secured to the outer end of the collar and a spring pressed valve carried by the cap and engageable with the valve seat in a manner such that the spring is under compression when the cap is applied.

2. The combination with a pipe, of a collar permanently inserted within the end of the pipe and provided at the inner end with an inturned flange forming a valve seat, a cap releasably secured to the outer end of the collar and a spring pressed disk like valve carried by the cap and engaging the valve seat, said spring being under compression and holding the valve to the seat when the cap is applied.

3. The combination with a pipe, of a collar permanently secured within the end of the pipe and provided with an inturned flange forming a valve seat, a cap detachably secured to the outer end of the collar, a slidably mounted valve stem carried by the cap, a valve carried by the inner end of the valve stem and a coiled spring located on the valvev stem and interposed between the cap and the valve and designed, when the cap is iinally applied on the collar, to be under compression and holding the valve tightly seated against the valve seat.

4L. The combination with a pipe, of a collar permanently securedl with the end of the pipe and provided at the inner end with an inturned flange forming a valve seat, a cap detachably secured to the outer end of the collar, a bracket located centrally on the inner side of the cap, a valve stem slidably mounted in the bracket and provided at the opposite ends with outer and inner adjusting nuts, a disk like valve secured to the inner end of the stem by the innermost adjusting nut and a spring interposed between the valve and the cap and designed to hold the valve pressed tightly against the valve seat in the finally applied position of the cap.

Signed at IVinHiPeg, this 27 th day of December, 1917.

CHARLES EDIVARD GATE.

In the presence of- G. S. ROXBURGH, K. B. IVAKEFIELD'.

Copies of this patent may be obtained for five cents.y each, by addressing the Commissioner of Patents, Washington,.1). C. 

